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Latest Posts

VCloud
Blog
01 // 31 // 13
vCloud vs. vSphere: What’s the difference anyway?
You’ve been building your vSphere environment for several years now. After a few upgrades, both hardware and software, you’ve finally developed a robust, flexible platform for your infrastructure. vCenter Server [...]
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Terry Slattery
Blog
01 // 23 // 13
Terry is Presenting at Enterprise Connect Orlando 2013
Terry will be presenting again at Enterprise Connect Orlando 2013. If you are planning on attending, you might be interested in attending one of the three sessions that Terry Slattery will be supporting. Terry will be a presenter during a two breakout on How To Keep Video From Blowing Up…
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Carole Warner Reece
Blog
01 // 16 // 13
Rick Repeats as Cisco Designated VIP Honoree
Congratulations to Rick Burts from NetCraftsmen who has again been recognized by Cisco in their Designated VIP program!   Rick has been selected for the 3nd year in a row to receive the Cisco Designated VIP honor.  The Cisco Designated VIP program recognizes the top external individual contributors in Cisco's…
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C-MUG
Blog
12 // 21 // 12
C-MUG Talk on Software Defined Networking
I am researching various aspects of Software Defined Networking in preparation for my C-MUG talk in January. I’m finding it a really interesting topic. There are all sorts of wonderful [...]
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Nic Bhasin
Blog
12 // 20 // 12
Classic STP (802.1D) Exception BPDU Generation
Recently, a friend of mine, currently pursuing the CCIE, was tackling the all important topic of spanning tree; specifically taking a deep dive into the inner workings of classic STP [...]
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Network Security Number 1
Blog
11 // 17 // 12
Security Mistakes That Leave You Vulnerable To Compromise #1: Failure To Monitor Your Network.
Here is my list of the top ten security mistakes that IT staff makes.  These mistakes leave your network vulnerable to attack and compromise. Mistake #1: Failure to monitor your network. [...]
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Blog
11 // 14 // 12
Clarifying BFD and BFD Echo
What is the difference between “plain” BFD and BFD echo, also what is the “BFD slow timer” for? That’s BFD as in Bi-Directional Forwarding Detection — what did you think [...]
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Blog
11 // 06 // 12
Much Ado About MTU
Who among us has not encountered MTU issues, generally in conjunction with a VPN or GRE tunnel? Okay, all two of you can put your hands down now. My point [...]
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Blog
11 // 05 // 12
Using OSPF Point-to-MultiPoint on Ethernet
In a recent consulting situation, it looks like running OSPF in point-to-multipoint mode over Ethernet provides a rather clean solution to what is potentially a rather messy problem. The customer [...]
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Blog
10 // 29 // 12
OTV and DCI Require STP Defenses
I hope you are not thinking, "What's this about OTV and DCI needing defenses?" But if this question puzzles you, this blog is for you. The purpose of this blog is to make sure everyone (who reads this) is aware, Data Center Interconnect (DCI) techniques, and in particular OTV, do not…
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Cisco
Blog
10 // 24 // 12
NX-OS QoS Hints and Quirks

I have been testing some NX-OS QoS configurations, and have found a couple of quirks as well as some hints that I thought I would briefly summarize.

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Blog
10 // 23 // 12
Network Virtualization in the Data Center
I presented a CMUG session on Network Virtualization in the Data Center today. Thanks to all those who turned out!  The presentation consisted of a mix of my "whiteboard" sketches and Cisco slides (used with permission). I tried to put things together to tell a story of what various virtual…
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